INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
1
RADAR III SENSOR
COMPLIANCE
This equipment has been tested and found to comply with the limits for a
Class B digital device pursuant to part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference in a
residential installation. This equipment generates, uses, and can radiate
radio frequency energy and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio communications.
However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to
radio or television reception which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
– Reorient or relocate the receiving antenna
– Increase the separation between the equipment and receiver
– Connect the equipment into an outlet on a circuit different from that
to which the receiver is connected
– Consult the dealer or an experienced radio/TV technician for help
DISCLAIMER
DICKEY-john reserves the right to make engineering refinements or
procedural changes that may not be reflected in this manual. Material
included in this manual is for informational purposes and is subject to
change without notice.
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
2
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
3
RADAR III SENSOR
IMPORTANT: Changes or modifications to the RVS ground speed
sensor not expressly approved by DICKEY-john
could void the user’s authority to operate the
equipment.
The RVS III Radar Sensor is a streamlined sensor that views ground
surface for accurate ground speed detection. High-tech planar array
provides velocity measurement with velocity errors of less than or equal to
1-3% after infield calibration.
MOUNTING BRACKET KITS
Several mounting options are available with the RVS III Radar. Two bracket
kits are available that meet most application requirements.
• A standard pipe mounting plate for use when the implement already
has a 3/4” diameter pipe mount in a suitable location, and
• A mounting pipe kit to be used in combination with the standard pipe
mounting plate.
NOTE: 2006 models of the Vibration
Isolation Mount hardware kit
use 1/4” hardware (kit
467830781)
RVS III RADAR SENSOR KIT
1. RVS III Radar Sensor
2. Installation Instruction
3. Vibration Isolation Mount Hardware Kit
– Isolation Mounts (3)
– 6 mm Nuts (6)
– 6 mm Flat Lockwashers (6)
– 6 mm Split Ring Lockwashers (6)
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
4
RVS III MOUNTING BRACKET KIT
1. Mounting Bracket
2. U-Bolts 1 1/8” x 2” x 1/4 - 20 (2)
3. 1/4” Split Ring Lock Washers (4)
4. 1/4 - 20 Nuts (4)
RVS III “L” PIPE MOUNTING BRACKET KIT
1. “L” Pipe Mounting Bracket
2. 3/8 - 16 x 1 1/2” Bolts (2)
3. 3/8 Split Ring Lock Washers (2)
4. 3/8 Nuts (2)
24V RVS III ADAPTER CABLE ASSEMBLY
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
5
MOUNTING
SELECT A MOUNTING LOCATION
1. Park the vehicle on level ground. This is necessary in order to install
the radar at the proper angle with respect to the ground. Refer to
Figure 1 for illustration.
NOTE: Rear facing orientation is the
preferred mount for more
physical protection of the radar,
however, there can be
instances where the radar
orientation must face forward.
Figure 1
Proper Radar Placement
NOTE: The radar must have an
unobstructed cone-shaped
view of the ground. If a vehicle
tire, hose, or liquid line is within
the cone-shaped area,
erroneous readings can result.
2. The following list describes some of the precautions that must be
followed when selecting a mounting location.
– The face of the radar must have an unobstructed view of the
ground. The area that must remain unobstructed is cone-shaped
from the face of the radar to the ground, as illustrated in Figure 2.
The pattern of the radar signal on the ground is oval-shaped due to
the installation angle. The size of the oval pattern is dependent on
the radar height above ground.
Figure 2
Unobstructed Mounting Location
35°
Rear of
tractor
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
6
Following is the pattern size for the indicated height.
RADAR HEIGHT PATTERN SIZE (OVAL)
18 inches 18.8 x 12.7 inches
24 inches 24.17 x 17.2 inches
48 inches 31.0 x 25.6 inches
– Fluids must not drip on radar face area.
– Ensure that radar is away from all heat sources.
– The radar face housing must not touch the vehicle.
– Keep radar away from stubble and debris.
– It is recommended that the radar be installed facing the rear of the
vehicle.
– The radar mounting location can have a minimal amount of
vibration; however, excessive vibration can cause erroneous MPH
readings with the vehicle stationary.
NOTE: The most critical dimensions
are the placement of the three
Radar III sensor mounting
holes. These holes can be
ovaled out if they are not drilled
in the exact location.
IMPORTANT: Operational vibration limits (with isolation mounts) are
0.75 grms from 200 Hz - 350 Hz and 3 grms from 351 Hz -
2000 Hz.
Figure 3
Radar Placement
Mounting
Bracket
Sensor
2 to 4 Feet above
Ground
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
7
PIPE MOUNTING BRACKET KIT
The Pipe Mounting Bracket Kit consists of a mounting plate and two U-bolts
with lock washers and nuts. This kit is used to install the Radar on the “L”
pipe mounting bracket per Figure 4. If the pipe mounting bracket is already
installed, proceed to step 3; otherwise continue as follows.
Figure 4
Typical Pipe Mounting Locations
1. Select a location (on the inside of the main frame, when possible) to
install the radar “L” pipe mounting bracket. If possible, select a location
where two existing bolts can be used and drill matching holes in the
angle iron on the pipe mounting bracket. Figure 4 shows some typical
mounting positions.
2. If two existing bolts are not at the selected location, drill two holes in
the mounting surface and two matching holes in the angle iron on the
pipe mounting bracket (check the opposite side of the drilling surface
for wires, hoses, etc.). Before installing the pipe mounting bracket,
ensure the radar can be positioned over the pipe extending from the
bracket. If not, the radar will have to be installed on the pipe before the
mounting bracket is secured to the mounting surface.
NOTE: Operational vibration limits
(with isolation mounts) are 0.75
grms from 200 Hz - 350 Hz and
3 grms from 351- Hz - 2000 Hz.
IMPORTANT: Welding the bracket to the mounting surface is NOT
RECOMMENDED. Excessive frame vibration may
necessitate the relocation of the mounting bracket to a
more stable location. Also, do not weld the bracket in a
location that inhibits the removal of the radar.
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
8
If at any time an arc welder is used on the vehicle, or anything
connected to the vehicle, disconnect all power and ground leads
that provide power for the system. Failure to do so can result in
damaged electronic components, in which case the warranty will
be VOID.
3. Refer to the following illustration and install the radar mounting
hardware as shown.
4. Ensure the radar is above the pipe with its face toward the rear of the
vehicle (if possible) and the enclosure seam placed down toward the
mounting plate.
5. Tighten the three nuts holding the isolation mounts to the sensor.
6. Tighten the radar to the Mounting Plate using three nuts and lock
washers.
7. Tighten the U-bolts until the radar will hold position but can still be
adjusted as needed on the pipe.
Figure 5
Radar Mounting
Do not exceed 30 - 35 in-lbs (3.0 - 3.5 Nm) of torque when
tightening the nuts of the three Isolation mounts when securing
the Radar III to the mounting bracket. Overtightening the nuts can
fracture the Radar sensor housing. Ensure the rubber isolation
mounts do not twist when tightening. Overtightening can cause
the rubber to tear compromising radar mounting.
Pipe Mounting
Bracket
Mounting
Plate
Radar Sensor
Face
Isolation Mounts
Nut
Nuts
Split Ring Washers
Split Ring Washers
Enclosure
Seam
Flat Washers
Flat Washers
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
9
8. Refer to Figure 6 and hold the mounting bracket template for pipe
installation behind the the radar sensor over the pipe as shown.
(Template is located on page 13 of this instruction.)
Figure 6
Pipe Mounting Installation
9. Rotate the radar on the mounting pipe until the front of the radar aligns
with the 35o angle on the template.
10. Tighten the mounting hardware.
IMPORTANT: The vehicle must be on level ground when the angle is
set.
IMPORTANT: The radar housing must not come in contact with the
vehicle frame or the mounting bracket. Such contact can
cause erratic readings by introducing electrical noise
into the radar and could potentially cause electrical
damage to the radar.
35 a
o
Angle Setting Template
side of radar sensor
mounted to pipe
front of radar
sensor
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
10
POWER CONNECTION
Refer to the following diagrams (Figure 7 and 8) illustrating the connection
relationship for both 12V and 24V systems.
• The Radar is a 12V system that can be connected to an implement
operating on 12V by routing the radar harness to the console and
attaching the mating connectors.
Figure 7
12V Power Connection
• A 24V adapter assembly is available for implements operating with
24V systems. The adapter assembly is attached between the console
and radar and connected to the corresponding mating connectors.
Figure 8
24V Power Connection
All 24V vehicles must use the adapter cable assembly provided
with the kit. Failure to do so can cause electrical damage to the
radar.
RADAR III
CABLE ASSEMBLY
24V POWER CONNECTION-CONSOLE
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
11
IMPORTANT: Do not secure the cable until the radar has been checked
for vibration. Excessive vibration can cause ground speed (MPH)
readings to be above zero when the vehicle is stationary.
NOTE: Operational vibration limits
(with isolation mounts) are 0.75
grms from 200 Hz - 350 Hz and
3 grms from 351 Hz - 2000 Hz.
VIBRATION CHECK
To check for vibration, start the vehicle engine and slowly increase engine
RPM (while watching the ground speed readout) to approximately 1800. If
the ground speed readings are above zero, the radar must be mounted in
an alternate, more stable location. After the radar readings are checked and
found to be stable, secure the radar cable in a protected location.
CONSOLE CALIBRATION
After radar installation and the system is operational, the radar or console
must be calibrated.
Refer to the Monitor Console Installation and Operation Manual and
perform the ground speed (distance) calibration procedure as described.
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
12
PLATE MOUNTING BRACKET
(Fabricated By User)
For applications that cannot use the provided DICKEY-john mounting
brackets, Figure 9 provides a dimensional drawing of a plate mounting
bracket that can be fabricated by the installer. The mounting plate must be
made of 5/16 inch or thicker steel plate.
IMPORTANT: Using a steel plate less than 5/16 inch can cause the
radar velocity sensor to vibrate causing erroneous MPH
(kph) readings.
NOTE: Operational vibration limits
(with isolation mounts) are 0.75
grms from 200 Hz - 350 Hz and
3 grms from 351 Hz - 2000 Hz.
Figure 9
Plate Mounting Bracket Dimensions for Fabricated Mounting Bracket
NOTE: The mounting plate must not
extend past the radar housing.
Metal beside the face area can
cause improper operation of the
radar.
Suggested mounting hardware for a 5/16 inch plate is as follows:
1. 3/8 - 16 x 1 1/2” Bolts (2)
2. 3/8 Split Ring Lockwashers (2)
3. 3/8 Nuts (2)
4. Vibration Isolation Mounting Hardware Kit
– 6 mm Nuts (6)
– 6 mm Isolation Mounts (3)
– 6 mm Flat Lockwashers (6)
– 6 mm Split Ring Lock Washers (6)
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
13
FABRICATED MOUNTING PLATE INSTALLATION
NOTE: 2006 models of the Vibration
Isolation Mount hardware kit
use 1/4” hardware (kit
467830781)
Figure 10 illustrates installing the Radar on a flat plate mounting bracket
with the enclosure seam on the side. Ensure spacers are installed as
shown.
Figure 10
Fabricated Mounting Plate Installation
Do not exceed 30 - 35 in-lbs (3.0 - 3.5 Nm) of torque when
tightening the nuts of the three isolation mounts when securing
the Radar III to the mounting bracket. Over tightening the nuts can
fracture the Radar sensor housing. Ensure rubber isolation
mounts do not twist when tightening. Overtightening can cause
the rubber to tear compromising radar mounting.
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
14
Mounting Plate Installation:
1. Drill out the “A” mounting hole.
2. Install a 3/8 inch bolt, lock washer, and nut.
3. Tighten the bolt enough so the mounting plate will hold position without
slipping.
4. Tape the alignment template to the radar.
5. Using a small carpenter’s level, rotate the mounting plate until the
dotted line on the template is level.
6. Drill out the “B” mounting hole. If necessary, the “B” mounting hole can
be ovaled out to provide the rotation necessary to adjust the radar
angle.
Figure 11
Mounting Plate
Plate
Mounting
Bracket
Carpenter's
Level
Alignment
Template
A B
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
15
MOUNTING BRACKET TEMPLATE FOR PLATE
MOUNTING BRACKET TEMPLATE FOR PIPE
SAFETY INFORMATION
Align with radar cable
CUT ON
OUTSIDE
SOLID LINE
3.14”
1.62”
.82
35 ANGLE
0 DEGREES
FIT OVER PIPE
CUT ON
OUTSIDE
SOLID LINE
o
INSTALLATION INSTRUCTIONS
DJRVS III Radar Velocity Sensor
11001-1419D-201701 Rev B
16
POWER - 12V VERSION
Voltage: 13.0V nominal (9.0 - 16.0V)
Current: Less than.60A
POWER - 24V VERSION (REQUIRES 24V DJ RVS III
ADAPTER CABLE ASSEMBLY P/N 467830812)
Voltage: 26.0V nominal (18.0 - 32.0V)
Current: Less than.63A
ELECTRICAL PROTECTION
On both versions, power is to be supplied to the radar by a 5A automotive
type fuse (or less) to protect the circuit. Reverse Polarity protection is built
into the Radar using series diode (radar has open circuit to protect against
reverse polarity on power lines).
SAFETY
The DICKEY-john RVS III Radar is an intentional radiator of RF energy.
Although its radiated energy level is far below the limits set by En 61010-1:
1993 \ A2: 1995 - Chapter 12.4, it is advisable not to look directly into the
face of the unit.
The radar must radiate toward the ground and at least 20 cm (8 inches)
away from a human during use to comply with the RF human exposure
limits as called out in FCC 47 CRFR sec. 2.1091. DO NOT MOUNT THE
RADAR IN A MANNER INCONSISTENT WITH ITS DEFINED USE.
MAINTENANCE
The DICKEY-john RVSIII Radar requires no periodic maintenance. It has
been designed to withstand typical environmental conditions found on the
underside of an agricultural tractor or vehicle. If the radar is spray washed,
do not exceed 65 Bars of pressure and maintain a distance of at least 1
meter.
EUROPEAN SUBSIDIARY
DICKEY-john Europe S.A.
165, Boulevard de Valmy
92706 Colombes, France
Tel: 33 1 41 19 21 80
MANUFACTURER
DICKEY-john
5200 Dickey-john Road
Auburn, Illinois 62615
Tel: (217) 438-3371
Fax: (217) 438-6012 Fax: 33 1 47 86 00 07
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